From 8a6e20ce4c14bb2f3c0bc98e8e69aa2ef891aa3b Mon Sep 17 00:00:00 2001 From: Martin Odersky Date: Thu, 29 Apr 2010 13:12:20 +0000 Subject: Tightened variances check. Review by prokopec. --- test/files/neg/variances.check | 13 ++++++++----- test/files/neg/variances.scala | 8 ++++++++ 2 files changed, 16 insertions(+), 5 deletions(-) (limited to 'test/files') diff --git a/test/files/neg/variances.check b/test/files/neg/variances.check index e6abdcbb53..6acd9470b6 100644 --- a/test/files/neg/variances.check +++ b/test/files/neg/variances.check @@ -1,13 +1,16 @@ -variances.scala:4: error: covariant type A occurs in contravariant position in type test.Vector[A] of value x +/home/odersky/workspace/scala/test/files/neg/variances.scala:4: error: covariant type A occurs in contravariant position in type test.Vector[A] of value x def append(x: Vector[A]): Vector[A] ^ -variances.scala:14: error: covariant type A occurs in contravariant position in type A of value a +/home/odersky/workspace/scala/test/files/neg/variances.scala:14: error: covariant type A occurs in contravariant position in type A of value a private[this] def setA(a : A) = this.a = a ^ -variances.scala:16: error: covariant type A occurs in invariant position in supertype test.C[A] with ScalaObject of object Baz +/home/odersky/workspace/scala/test/files/neg/variances.scala:16: error: covariant type A occurs in invariant position in supertype test.C[A] with ScalaObject of object Baz object Baz extends C[A] ^ -variances.scala:63: error: covariant type A occurs in contravariant position in type => test.Covariant.T[A]{def m: (A) => A} of value x +/home/odersky/workspace/scala/test/files/neg/variances.scala:63: error: covariant type A occurs in contravariant position in type => test.Covariant.T[A]{def m: (A) => A} of value x val x: T[A] { ^ -four errors found +/home/odersky/workspace/scala/test/files/neg/variances.scala:79: error: covariant type T occurs in contravariant position in type => test.TestAlias.B[C.this.A] of method foo + def foo: B[A] + ^ +5 errors found diff --git a/test/files/neg/variances.scala b/test/files/neg/variances.scala index 67783bc4aa..181783f48a 100644 --- a/test/files/neg/variances.scala +++ b/test/files/neg/variances.scala @@ -71,3 +71,11 @@ object Covariant { val t: T[Any] = ST t.x.m(new Object) } + +object TestAlias { + class B[-T] + trait C[+T] { + type A = T + def foo: B[A] + } +} -- cgit v1.2.3